The first new episode of the “Twin Peaks” reboot airs on May 21 at 9 p.m. on Showtime. Before then, Showtime hosts a two-day “Twin Peaks” experience at SXSW. It features musical performances (by Neko Case, Real Estate, Tame Impala’s Cameron Avery, and more), a Double R Diner pop-up shop, and more. Check out new “Twin Peaks” posters here.